Senki - Succubus

The battlefield is an isometric grid. Weather, elevation, and "Lust Terrain" (areas corrupted by demonic energy) affect movement. Units have six stats:

The unique mechanic is the "Soul Drain" system. After defeating a human enemy, your Succubus can perform a Drain action to restore HP/Mana. However, doing so exposes them to a counterattack for one turn. High risk, high reward.

Because the game features perma-death conditions (or "game over scenes" that players often want to see vs. avoid), a structured guide is highly valued content. Succubus Senki

The keyword Succubus Senki often leads to searches expecting pure fanservice. However, veterans will tell you the story is surprisingly grim. The title, "Senki" (War Chronicle), is taken very seriously.

Succubus Senki is an adult-oriented tactical role-playing game (RPG) developed by Shui Tian, originally released in Japan and later localized into English primarily by Kagura Games. It blends turn-based strategy gameplay with visual novel-style storytelling and explicit 18+ content. The battlefield is an isometric grid

These work in the current version (v1.2+). Enter them on the title screen:

If you are interested in experiencing this dark classic, here is the current best path: The unique mechanic is the "Soul Drain" system

Beginner Tips:

The longevity of Succubus Senki lies in its characters. While there are over 20 recruitable demons, three stand out:

At its core, Succubus Senki is a turn-based strategy RPG developed by an independent Japanese circle known for blending high-difficulty tactical combat with explicit adult content. Unlike many "grindy" eroge, Succubus Senki prioritizes resource management and risk assessment.

The premise is simple yet elegant: You play as a fallen knight, resurrected by a powerful Succubus Queen on the brink of annihilation. Humanity, led by a fanatical Inquisition, has declared a holy war against all demonkind. With only a crumbling fortress and a handful of demon girls, you must wage a guerrilla war to survive. The twist? To replenish your army’s energy (and heal wounds), you must forge pacts—intimate, contract-bound relationships—with your Succubus generals.